Majel Barrett Roddenberry is the widow of Star Trek creator Gene Roddenberry. She is the only cast member to have performed in The Original Series of Star Trek, Star Trek: The Next Generation, Star Trek: Deep Space Nine, Star Trek: Voyager, and Star Trek: Enterprise. She is well-known for having provided the voice of the Starfleet computer, as well as Nurse Christine Chapel in The Original Series. Roddenberry also played Lwaxana Troi, mother to Marina Sirtis's character, Deanna Troi, in Star Trek: The Next Generation and Star Trek: Deep Space Nine.